Cause is unclear. USGS reported a 4.9M earthquake in South of Africa at 11:18 UTC. Terramon predicted the R-wave arrival time to be 4:40 UTC with 0.0404561 um/s. That shouldn't have dropped us out of lock though. ASC signal and tidal looked stable on the FOM before the lockloss. Wind speed ~2mph.
11/23 OWL Shift 08:00-16:00 UTC (00:00-08:00 PST)
Out going Ops: Patrick
Quick Summary: I noticed DHARD P amplitude was higher than usual relative to others but nothing seems to be going wrong. Turns out the scaling on the FOM has changed, probably when Patrick restarted the FOM on Friday (alog23598). I changed both DHARD P and Y scaling to (-4000,4000) just for a peace of mind.
TITLE: 11/22 [EVE Shift]: 00:00-08:00 UTC (16:00-00:00 PDT), all times posted in UTC STATE Of H1: Observing @ ~ 78 MPc. SHIFT SUMMARY: Had some trouble relocking after the earthquake again. Three SUS ETMY saturation since. No evidence of RF45 noise. Seismic and winds unchanged. INCOMING OPERATOR: Nutsinee ACTIVITY LOG: 02:21 UTC Rick S. leaving site
There is a blue box with the number 1 in it under the CRC column for H1ISIHAM3 on the O1 CDS detailed overview. I'm not certain what this means. Screenshot attached. Relocking sequence: Had to move both ETM and TMS for both arms to lock on green. Took a long time. Stopped in CHECK_IR. IR not really found. Adjusted H1:ALS-C_COMM_VCO_CONTROLS_SETFREQUENCY and H1:ALS-C_DIFF_PLL_CTRL_OFFSET. Modes look bad and flashes are low in power on LOCK_DRMI_1F Starting initial alignment Had to adjust ETMS to lock arms on green Moved PR3 to slightly improve COMM beatnote Done initial alignment Had to adjust ETMY in Pitch to lock on green Stopped at ENGAGE_ASC_PART3. Lowered diffracted power. Had to rerequest READY_FOR_HANDOFF for OMC_LOCK node at DC_READOUT_TRANSITION. Got 'wrong node?' notification. Rerequested READY_FOR_HANDOFF. No change. Put OMC_LOCK node to auto It went back through the sequence and got to READY_FOR_HANDOFF The ISC_LOCK guardian went on. While it was at INCREASE_POWER I put the OMC_LOCK node back to managed. Got 'node OMC_LOCK: STOLEN (by: USER)' notifications on ISC_LOCK guardian. Stopped at engage ISS second loop Engaged ISS second loop by hand Attempt to remanage OMC_LOCK node: Put ISC_LOCK node to manual Selected INIT for ISC_LOCK node Got oh no it is unlocked voice, but it wasn't Selected ENGAGE_ISS_SECOND_LOOP for ISC_LOCK node Put ISC_LOCK node back to auto Requested NLN for ISC_LOCK node Made it to NLN!
Spike to ~ 0.8 um/s in the earthquake band.
Still locked and observing. No change in wind or seismic. A number of SUS ETMY saturations. These do not appear to be reflected in RF45 noise. The verbal alarms script is indicating CS temperature is low, but I don't see any alarms on the FMCS overview.
The strip chart was periodically stopping and starting.
TITLE: 11/22 [EVE Shift]: 00:00-08:00 UTC (16:00-00:00 PDT), all times posted in UTC STATE Of H1: Observing @ ~ 76 MPc. OUTGOING OPERATOR: Travis QUICK SUMMARY: From the cameras: The lights are off in the LVEA. The lights are off in the PSL enclosure. The lights are off at mid X. I can not tell if the lights are on or off at mid Y. The lights are off at end X. The lights are off at end Y. The 0.03 - 0.1 Hz (earthquake) seismic band is between ~ 0.01 and 0.04 um/s. The 0.1 - 0.3 Hz (microseism) seismic band is between ~ 0.09 and 0.4 um/s. The winds are between ~ 0 and 10 mph. The ISI blends are on Quite_90. From pinging: CDS WAP is off at the LVEA. CDS WAP is on at mid X. CDS WAP is on at mid Y. CDS WAP is off at end X. CDS WAP is off at end Y.
Title: 11/22 Day Shift 16:00-24:00 UTC (8:00-16:00 PST). All times in UTC.
State of H1: Observing
Shift Summary: Locked for my entire shift, going on 21 hours for this lock. 6 ETMy saturations, none related to RF45 glitching.
Incoming operator: Patrick
Activity log: Took ETMx photos with Rick with PCal camera.
Locked in Observing the entire shift so far. A couple of ETMy saturations, but not related to any RF45 glitching.
O1 day 65
model restarts logged for Sat 21/Nov/2015 No restarts reported
GRB alert @ 17:01 UTC. Unfortunately, LLO is still down.
Activity Log: All Times in UTC (PT) 08:00 (00:00) Take over from Patrick 08:50 (00:50) GRB alert 09:15 (01:15) Air handler alarms for CS zone 1B and zone 4 – Duct temperatures 97.3F and 99.41F 12:10 (04:10) GRB alert 16:00 (08:00) Turn over to Travis End of Shift Summary: Title: 11/21/2015, Evening Shift 08:00 – 16:00 (00:00 – 08:00) All times in UTC (PT) Support: None needed Incoming Operator: Travis Shift Detail Summary: 08:50 (00:50) GRB alert – LHO in Observing; LLO down due to environmental issues. Ignored alarm. 12:10 (00:10) GRB (E202631) – LHO in Observing; LLO down due to FE problem. Ignored the alert. Generally a good shift. IFO in Observing mode for ~ 12 hours. Range has been around 78Mpc. Other than cold and fog, weather is good and seismic has been stable for the entire shift. Only one ETM-Y saturations and no problems with RF45. No additional temperature related alarms in the corner or end stations.
12:10 (04:10) Received GBR alert (E202631). LHO in Observing mode. Spoke with LLO; their FE is down and they are working on recovery. Ignored the alert.
A good first half of this Owl shift. IFO in Observing mode for past 9 hours. Range is around 78Mpc. Wind is clam (0 - 3mph) and seismic activity is low and steady. Warmer than last night, the corner station is reporting a balmy 26F, with heavy fog. There has been one EMT-Y glitch.
Had temperature alarms on FMC-CS_LVEA_REHEAT_1B_DEGF and FMC-CS_LVEA_REHEAT_4_DEGF. CS zone 1B has output temp of 98.41F and zone 4 is at 99.56F. Have attached a 48 hour trends of the chiller yards and a screen shot of the corner station air handlers. Will continue to monitor.
08:50 (00:50) received GRB alert (E202583). LHO in Observing. Spoke to LLO, they are down due to environmental conditions. Ignored alert.
Title: 11/22/2015, Evening Shift 08:00 – 16:00 (00:00 – 08:00) All times in UTC (PT) State of H1: 08:00 (16:00), The IFO locked at NOMINAL_LOW_NOISE, 22.3w, 79Mpc. Outgoing Operator: Patrick Quick Summary: IFO has been in Observing mode for the past 5 hours, except as noted in Patrick log entries. Environmental conditions – wind is a light to gentle breeze (4-12mph). Seismic activity is quiet after a couple of small earthquakes ~ 2 hours ago. Microseism is centered around 0.3 um/s.
Relocked and Observing again at 12:35 UTC. The butterfly mode near 2500Hz amplitude is currently at 2e-16 m/sqrt(Hz) but seems to be coming down slowly. I had to touch COMM VCO and DIFF OFFSET to maximize LSC TRX and Y normalized transmission during FIND_IR. And had to engage ISS 2nd loop by hand several times before succeeded.
The BNS range has been slowly dropping since about an hour ago. I know we lose some range due to the local traffic but losing 10 Mpc seems a bit much....